-(define (reset-timestamps directory)
- "Reset the timestamps of all the files under DIRECTORY, so that they appear
-as created and modified at the Epoch."
- (display "clearing file timestamps...\n")
- (for-each (lambda (file)
- (let ((s (lstat file)))
- ;; XXX: Guile uses libc's 'utime' function (not 'futime'), so
- ;; the timestamp of symlinks cannot be changed, and there are
- ;; symlinks here pointing to /gnu/store, which is the host,
- ;; read-only store.
- (unless (eq? (stat:type s) 'symlink)
- (utime file 0 0 0 0))))
- (find-files directory "")))
-
-(define* (register-closure store closure
- #:key (deduplicate? #t))
- "Register CLOSURE in STORE, where STORE is the directory name of the target
-store and CLOSURE is the name of a file containing a reference graph as used
-by 'guix-register'. As a side effect, this resets timestamps on store files
-and, if DEDUPLICATE? is true, deduplicates files common to CLOSURE and the
-rest of STORE."
- (let ((status (apply system* "guix-register" "--prefix" store
- (append (if deduplicate? '() '("--no-deduplication"))
- (list closure)))))
- (unless (zero? status)
- (error "failed to register store items" closure))))
+(define %root-profile
+ "/var/guix/profiles/per-user/root")
+
+(define* (install-database-and-gc-roots root database profile
+ #:key (profile-name "guix-profile"))
+ "Install DATABASE, the store database, under directory ROOT. Create
+PROFILE-NAME and have it link to PROFILE, a store item."
+ (define (scope file)
+ (string-append root "/" file))
+
+ (define (mkdir-p* dir)
+ (mkdir-p (scope dir)))
+
+ (define (symlink* old new)
+ (symlink old (scope new)))
+
+ (install-file database (scope "/var/guix/db/"))
+ (chmod (scope "/var/guix/db/db.sqlite") #o644)
+ (mkdir-p* "/var/guix/profiles")
+ (mkdir-p* "/var/guix/gcroots")
+ (symlink* "/var/guix/profiles" "/var/guix/gcroots/profiles")
+
+ ;; Make root's profile, which makes it a GC root.
+ (mkdir-p* %root-profile)
+ (symlink* profile
+ (string-append %root-profile "/" profile-name "-1-link"))
+ (symlink* (string-append profile-name "-1-link")
+ (string-append %root-profile "/" profile-name)))